I got a rather nasty surprise upgrading from CentOS 7.2 to 7.3. As far as I
can tell the libvirt 2.0.0 that ships with 7.3 doesn’t behave the same way as
the 1.2.17 that ships with 7.2 when using ceph with cephx auth during volume
attachment using virtio-scsi. It looks like it fails to add the cephx secret.
The telltale signs are "No secret with id 'scsi0-0-0-1-secret0’” in the
/var/log/libvirt/qemu instance logs. I’ve filed a bug here
https://bugzilla.redhat.com/show_bug.cgi?id=1406442 and there is a libvirt
mailing list thread about a fix for libvirt 2.5.0 for what looks like this
same problem
https://www.redhat.com/archives/libvir-list/2016-October/msg00396.html I’m out
of ideas for workarounds having had kind of a disastrous attempt at downgrading
to libvirt 1.2.17, so if anybody has any suggestions I’m all ears.
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